Drug-mill.



. phia.'and-'St'ate` .l Vented/certain new and i otr-the required i-neness,

snare EDwAnnHi- Halton, orrninsnnnrnra renner-Lirama, assrononmo nance:

.enormous a Werra, connesso or entre or rn1LAnELPHIA, n ri. nanou AND ANTHONY M. nanou.

PEN NSYLVANA, A COPARTNERSHX? nano-1art1..V

Loteries.'

y myention relates todrug mills of they conical-plato type, in which the serrations of a rotating conical-plate are opposed to the Ac`,'orresponding serrations 'in a fined hell plate, which covers thev saine, and which vaperoa'ches more closely to the surface of conical-plate`as it flares outwardly, so

that the material deposited upon the center ofthe conical-plate is ground with increasing Endless, as it descends toward the rim plate, and, after being ground to the falls from the same intoan annular recess which guides it to the dis'- ch'arge chute. Although mills of this type areuseful i for grinding all sorts of roots, berries, barks, and other materials' used" in pharmacy, and also for other grinding purposes, yetthere'is a'necessary limit as to the initialgsize ofthe pieces of the article to he ground.

Itis thel object of Iny present invention to pro-Vide a mill of this type with suitable crushing ineans, to .Which anything fed to the mill issubjected priorto its passing to the grinding surfaces of the conical-plate. This insures the proper sequence `of operation,4 to Wit, an initial crushing operation in the hopper Where the crushing ineansare situated, then the coarse grinding at the top of the conical-plate, and in the end, a line grinding operation hy which the material maybe coiruninuted4 to anyv desired extent.

In the accompanying; drawings, Figure I, is a front elevation oi a mill conveniently embodying my invention. F Ail, is a central vertical sectional View on an enlarged scale, taken on the line ll, lll., in Fig. I. Fig. lll, is a plan section through the hopper of the mill taken on line lll, lll, in Fig.

H. Fig. lV, is asimilar section taken on the Y line IV, lV, in Fig. ll.

Inthe said figures, l, designates the bed of the mill which is supported on the standards', and 3, terminating in hase 'plate 4f, mounted upon a pedestal 5. The standard 3, embraces' a bearing 6, in which is .jour- Specication of Letters.Patent.V .application :Med December 1, 1908.

Patented Nov. il., idll. serial no. 4655s?.

naled the `horizontal driving shaft 7, provided at its outer end with fast and loose pulleys 8, and 9, respectively.

bevel shaft 7, at pinion l2,

its inner end and meshes with a which is keyed to the vertical shaft 13,- journaled at its lower end in a boss Il5, on the base plate l, and at its upper end on the bed l, Where it rounded end directly above the top of a conical portion i7 of said leed l, surrounded y an vannular recess 18, as seen in liig.y ll.-

The peripheral flange Q0, on the hed l,

supports a corresponding flange 2l, on the lower portion of the conical hell 22, whose proper alinement With the said bed l, is maintained by the col-action of the'annular shoulder 23, on the lower face 2l, With the depression 55, on the upper tace of the langeQO. L

The conical hell 22, is heldin place by Winged nuts 3l, on the swinging eye bolts 32, which are pivoted at 33, to lugs formed on the bed l, and .received Within slots, in the peripheral flanges 2G, .and 2l. means, the mill may he taken apart very readily for cleaning.

A conical hopper 35, rests upon a .seat 36,'

formed on the top of the bell 529 and there held in place by bolts 37, Vwhich pass through lugs 38, on said hell 22, and are threaded into the cylindrical lower end ci' the said hopper 35.

A. hollow l supported Within thebell 22, on the rounded top of the vertical shaft 13, being secured thereto by a key 53, which is received within the slot 51, in the said cone 50.

A squared stein 55, extends vertically from the top of the cone 50, and terminates in a trunnion' 55, Which is received in the boss 57, on the cross piece 58, located within', and at'the top of the hopper 35, and secured by means. of the bolts 59. The squared stem 55, carries a series of Crushers 60, each having paired Wings 61, the said crushers being built up Wit-h their Wings in alternate rela'- tion to those which precede or follow. The advancing edge of the Wings is inwardly curved, to produce 'a gradual action. These Crushers are opposed to, and therefore co-act with a plurality oi. ribs 62,

cast on the inner surface the hopper All of the ribs are of varying heights, a long gear wheel il, is secured on the terminates in aV of said flange v By this grinding cone 50, is rotatably crushing rib succeeding a short rib. The shape of.

- these ribs, as well as their arrangement and relation to the criishers 60, is clearly ex hibited in Fig. III. By the action of these parts, the large material initially introduced into the hopper, is eiectually crushed or disintegrated, and partially comminuted before it reaches the conical grinding plate, now to be described, the longer ribs thus coacting with the largest pieces, and then the shorter ribs also coming into play.

Directly below the crushers 60, the cone 50, is provided with a doine shaped top 65, having cutting blades 66, which also coact-with the cutting blades 62, on the hopper 35, as best shown in Fig. IV. The remaining surface of the grinding cone 50, is

provided with serrations 70, which are very coarse at the top and gradually become very ineat the bottom, and which co-act with corresponding serrations 71, on the inner face of the surrounding bell 22. It will be noticed that there is a slight difference between the angle of the inner face of the bell 22, and the outer face of the cone 50, so

that the intervening space tapers very gradually downward. This together with the gradual decrease in the size of the colacting serrations admits of very tine grind- 2?l`he ground material drops within the annular recess 18, and is advanced to the chute 19, by means of the scraping rib 75,

Y formed on the under surface of the grinding cone 50, and is'then discharged through the chute.

In order to vary the degree of grinding, the vertical shaft 13, is supported at its bottom within a socket 80, in the lug 81, formed in the center of the adjustable plate 82. The

said plate 82, is received within the .opening v 83, in the boss 15, and is provided at one end with a foot 85, and at the other end with an adjusting screw 86, having a winged head 87, and a jam nut 88. rThe said adjusting screw 8G, rests upon the base plate L Land by its manipulation the shaft 13, and thereby the grinding cone 50, and all the parts attached thereto, can be vertically/ adjusted to regulate the degree of the grinding. v v

It will be noticed from the foregoing that vthe mill is so constructed that it may be readily taken apart, and the detachable feature between the vertical shaft 13, and

the grinding cone 50,'perniits the latter. to

be removed for cleaning without affecting the previous adjustment.

Having thus described my invent-ion, I claim t- In a conical plate drug mill, the combination of a hopper provided on its inner sur- :tace with vertically extending ribs of vary ing lengths, the longer ribs alternating with the shorter ribs, and extending above the same, a bell connected with the hopper, a cone located in the bell and extending into the hopper, said cone and bell having oppositelyv disposed serrations, and said cone having cutting blades cooperating with said 'longer and shorter ribs at their lower ends,

and a separate crushing member located above said cone, and mounted to rotate in axial relation with said .cone and hopper, said crushing member having means co-acting initially with the longerribs, and subsequently with the shorter andlonger ribs, as the material to be crushed passes down the hopper.

-In testimony whereof, 'I have hereunto signed my name at Philadelphia, Pennsylvania, .this twenty-seventh day of November 1908.

EDWARD I-I. HANCE.

Witnesses:

JAMES H. BELL, E. L. FULLERTQN. 

